Global Patent Index - EP 2080991 A4

EP 2080991 A4 20120328 - ROTATION ANGLE DETECTION DEVICE

Title (en)

ROTATION ANGLE DETECTION DEVICE

Title (de)

DREHWINKEL-DETEKTIONSEINRICHTUNG

Title (fr)

DISPOSITIF DE DÉTECTION D'ANGLE DE ROTATION

Publication

EP 2080991 A4 20120328 (EN)

Application

EP 07830977 A 20071031

Priority

  • JP 2007071243 W 20071031
  • JP 2006295269 A 20061031

Abstract (en)

[origin: EP2080991A1] A rotation angle detection device comprises a rotor (120) attached to a measurable rotation body (Sh) for rotating with the measurable rotation body to be measured a rotation angle, and comprising a magnet (110) that a magnetic flux density around the measurable rotation body is changed thereby in response to the rotation angle of the measurable rotation body; a stator (130) to be attached as independent of the rotation of the measurable rotation body; a detection element ((150) (151-154)) fixed on the stator for detecting a change in magnetic flux densitydue to the magnet in response to the rotation of the measurable rotation body; and a case for packing the rotor, the stator and the detection element. By detecting the rotation angle of the measurable rotation body in response to a detection signal from the detection element according to the rotation of the measurable rotation body, it becomes able to provide a rotation angle detection device comprising less number of components, to be small sized, to be easily assembled, and having excellent detection characteristics.

IPC 8 full level

G01D 5/18 (2006.01); G01B 7/30 (2006.01); H01L 43/06 (2006.01); H01L 43/08 (2006.01)

CPC (source: EP US)

G01B 7/30 (2013.01 - EP US); G01D 5/145 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2080991 A1 20090722; EP 2080991 A4 20120328; JP 2008111737 A 20080515; US 2009309585 A1 20091217; WO 2008053928 A1 20080508

DOCDB simple family (application)

EP 07830977 A 20071031; JP 2006295269 A 20061031; JP 2007071243 W 20071031; US 44776907 A 20071031